Electrochemical in-situ conductivity measurements for thin film of Li(1-x)Mn2O4 spinel

M. Nishizawa; T. Ise; H. Koshika; T. Itoh; I. Uchida

doi:10.1021/cm990696z

Electrochemical in-situ conductivity measurements for thin film of Li(1-x)Mn₂O₄ spinel

M. Nishizawa, T. Ise, H. Koshika, T. Itoh, I. Uchida

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

Electrical conductivity of LiMn₂O₄, which is a promising cathode active material for lithium ion batteries, was monitored in situ during electrochemical lithium extraction and reinsertion reactions in 1 M LiClO₄ propylene carbonate solution. The in-situ conductivity measurement was achieved by means of an interdigitated microarray electrode coated with a uniform and dense film of LiMn₂O₄. The conductivity of Li(1-x)Mn₂O₄ was found to exhibit a peak-shaped profile as a function of lithium content. The conductivity of Cr³⁺-doped spinel, LiMn_1.95-Cr_0.05O₄, decreased monotonically with decreasing lithium content. These results are discussed by considering the effects of phase transformation on the conductivity of these materials.

Original language	English
Pages (from-to)	1367-1371
Number of pages	5
Journal	Chemistry of Materials
Volume	12
Issue number	5
DOIs	https://doi.org/10.1021/cm990696z
Publication status	Published - 2000 Oct 16

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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Access to Document

10.1021/cm990696z

Cite this

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title = "Electrochemical in-situ conductivity measurements for thin film of Li(1-x)Mn2O4 spinel",

abstract = "Electrical conductivity of LiMn2O4, which is a promising cathode active material for lithium ion batteries, was monitored in situ during electrochemical lithium extraction and reinsertion reactions in 1 M LiClO4 propylene carbonate solution. The in-situ conductivity measurement was achieved by means of an interdigitated microarray electrode coated with a uniform and dense film of LiMn2O4. The conductivity of Li(1-x)Mn2O4 was found to exhibit a peak-shaped profile as a function of lithium content. The conductivity of Cr3+-doped spinel, LiMn1.95-Cr0.05O4, decreased monotonically with decreasing lithium content. These results are discussed by considering the effects of phase transformation on the conductivity of these materials.",

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T1 - Electrochemical in-situ conductivity measurements for thin film of Li(1-x)Mn2O4 spinel

AU - Nishizawa, M.

AU - Ise, T.

AU - Koshika, H.

AU - Itoh, T.

AU - Uchida, I.

PY - 2000/10/16

Y1 - 2000/10/16

N2 - Electrical conductivity of LiMn2O4, which is a promising cathode active material for lithium ion batteries, was monitored in situ during electrochemical lithium extraction and reinsertion reactions in 1 M LiClO4 propylene carbonate solution. The in-situ conductivity measurement was achieved by means of an interdigitated microarray electrode coated with a uniform and dense film of LiMn2O4. The conductivity of Li(1-x)Mn2O4 was found to exhibit a peak-shaped profile as a function of lithium content. The conductivity of Cr3+-doped spinel, LiMn1.95-Cr0.05O4, decreased monotonically with decreasing lithium content. These results are discussed by considering the effects of phase transformation on the conductivity of these materials.

AB - Electrical conductivity of LiMn2O4, which is a promising cathode active material for lithium ion batteries, was monitored in situ during electrochemical lithium extraction and reinsertion reactions in 1 M LiClO4 propylene carbonate solution. The in-situ conductivity measurement was achieved by means of an interdigitated microarray electrode coated with a uniform and dense film of LiMn2O4. The conductivity of Li(1-x)Mn2O4 was found to exhibit a peak-shaped profile as a function of lithium content. The conductivity of Cr3+-doped spinel, LiMn1.95-Cr0.05O4, decreased monotonically with decreasing lithium content. These results are discussed by considering the effects of phase transformation on the conductivity of these materials.

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